cottrell



(Model!) G. B. GOTTRELL.

' PAPER CUTTING MACHINE. No. 391,949. Patented Oct. 30,1888;

JIIIHHIIHIIIIIIIII V UNITE STATES" PATEN rip;

' oALvsR'r ii. concert, or STONiNGTOX, sonnsor rcnr.

FAPER-CUTTING. MACHINE.

SFECLPICATIQN forming part of Letters Patent No; 391,949, dated Ootcb r30, 1888.

Application filed August 25. 1897. SJ-ial No. 247,821. (Model) i cuttingapparatus which comprises two rotary 1o cutter-carriers between which acontinuous traveling web of paper passes, which are gearedtogether, andwhich by their rotation :causetheir cutters or cutting-blades to severthe paper 'into" sheets" of desiredalength.

r 5 Usually, heretofore, the rotary outter-carriers which have beengeared together have had. the

a v cutters or cutting-blades set in-a line parallel with their axes soas, to out throughout the entire width of the web of paper at the samezo instant; but an essential feature of my iuven-Q tion consists in thearrangement of the cutters or cutting-blades spirally or oblique to aline parallel with theaxis of the cutter-carrier,

- so that the two cutters or cutting--blades,which I a'ct in conjunctionto sever theweb,-operate with a shearing action in making the cut andwhile the web of paper is in motion. The invention'will be more fullyhereinafter described, and pointed out in the claims. In theaccompanying drawings, Figure 1 is H a sideview of apair of rotarycutter-carriers geared together and including a sectional view of aportion of the framing which supports their bearings. Fig. 2 is a planof the parts shown in Fig. 1.'Fig. 3 is an end view-of the parts shownin .Fig. 1, and Fig. 4 isa transverse section upon about the planeiridicated by the dotted line 00 ac,- Fig. 1. Similar letters ofreference designatecorreo sponding parts in all the figures.

-A A designate two parallel shafts which are g'eared together by pinionsor gear-wheels B B, and are supported in bearings 0. As.

here represented, the bearings Q of the two shafts are formed in thesame piece or block,

which is fitted to a suitable housing or framework, 1), and in thehousings or frames D the bearing-blocks C may be adjustedlaterally bymeans of set-screws c in either direction, and

they may be adjusted upward and downward by setscrews c. r V

The two shafts A A form part of rotary or flanges E, which arelikewisesecured to v the shaft A. It is desirable to have the lowercutter-carrier comprise circular surfaces, such as are supported by thecircular headsE, in order that they may support the sheets of paper asthey are cut oil from'the web by the cutters or cutting-blades,hereinafter described, and prevent the paper from dropping down. Thecircular Heads or flanges E support the paper and contribute to itsforward passage through the machine, as would a complete cylinder orroller. ,The cutter-carriers support the cutters or cutting-blades F,two for each carrier being here represented, and, inasmuch as the rotarycutter-carriers are accurately geared together by the wheels '13 B, thecutters on thetwo carriers are brought into proper cutting action twicein each rotation of the cuttercarriers, as will be understood from Fig.4.

I have represented the cutter-carriers as provided with notches e, whichform seats wherein the cutters or cutting-blades are placed, the bladesbeing less in thickness than the width of these notches, and the bladesare accurately adjusted in position laterally by means of set-screwse',inserted through opposite sides of the notches and bearing against opposite sides of the blades, and their projection from the rotarycutter-carriers is controlled by set-screws eflinserted through thebottoms of the notches. 7

An essential feature of my invention consists in the arrangement of thecutter or cutting-blades F out of parallelism with the axes of therotary cutter-carriers, and inlines which are spiral or obliquerelatively to a line parallel with such axes. This spirality orobliquity of the cutters or cutting-blades may be secured by making thenotches e considerably wider than the thickness of the blades F, andthen adjusting'the set-screws 0' so as to give the blades the desireddegree of spirality, or the notches may be arranged slightly spirallyupon the rotary cutter-carriers, as is repre;

sented in Fig. 2,:-the"'cross-bars or arms E in Fig. 2 not beingi'nlabsolutely the same plane,

but being arranged in slightly spiral position upon the shaft. Thisspiral or oblique arrangement of the cutters or cutting-blades isveryadvantageous, because the cutters or blades as they operate upon thetraveling web of paper passing between the rotary cutter-carriers have ashearing cutting action upon the paper, and the spiral arrangement 01'the blades enables them to operate with a shearing action, and at thesame time to cut paper squarely across at right angles to the edges ofthe web while it is moving or traveling at a steady rate of progression.

Of course the web of paper could be out 1. The combination, with tworotarycuttcrcarriers geared together, of cutters or cuttingbladessecured therein in spiral or oblique position, whereby the cutters orcutting-blades in the two carriers are given ashearing action eachrelatively to the other, substantially as herein describetLl 2. Thecombination, with two rotary cutter carriers geared together, and eachhaving notches or cutter-seats a, of cutters or cutting.

blades arranged spirally 0r obliquely insaid notches. the set screws 6,inserted transversely tothe notches and bearing on opposite sides of thecutters or cutting-blades to vary their degree of spirality, andset-screws e,- inserted through the bottoms of the notches to vary thedegree of projection of the cutters or cuttingblades, substantially asherein described.

- CALVERT I COTTRELL. Witnesses:

C. HALL, FREDK, Harm-1s.

